Concrete joint filling kit, method and device

Abstract

A system and method for filling joints in concrete. The system includes an A-side joint filler compound portion, a B-side joint filler compound portion, and a liquid pigment portion, which are mixed together in a mixing container initially containing only the A-side joint filler compound portion. The portions are mixed using a mixing rod. An elongate nozzle is then attached to the mixing container, and the mixing container added to an application gun for application to the joint.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation in part of U.S. patent application Ser. No. 15 / 251,644, filed on Aug. 30, 2016, the entire content of which is expressly incorporated herein by reference.STATEMENT RE: FEDERALLY SPONSORED RESEARCH / DEVELOPMENT[0002]Not ApplicableBACKGROUND[0003]The system and method herein relates to a system and method for filling “control” or “saw-cut” joints and “cold” or “expansion” joints in concrete floors.[0004]In placement of concrete floors there are normally two types of joints. Cold or expansion joint result when a section of a concrete floor is placed / pour by a previous section of concrete floor that was placed earlier that has hardened. Control or saw-cut joints are made when a large section of floor is placed. The control or saw-cut joints control cracking in large sections or slabs of concrete floor. The control or saw-cut joints are made early on in the placement of concrete floor, specifically, after the ...

AI Technical Summary

Benefits of technology

This patent describes a system for filling concrete control / saw-cut and cold / expansion joints using a special designed mixer to mix all the required parts (A-side, B-side, and optionally a liquid pigment) together. The resulting compound hardens quickly and color matches the surrounding concrete. The system also includes a mixing container, a mixing rod, a wipe disc, and an elongated nozzle for easy application. Compared to other polyurea cartridges, the system has a longer shelf life and offers the possibility of more than one color for the pigment portion.

Problems solved by technology

Unfortunately, once Part A and Part B are mixed with each other, they set very fast so that they have to be applied to the joint quickly before they set.

The quick setting nature of Parts A and B after being mixed limits the methods and apparatus for applying the joint filler materials to the joint.

The method and apparatus for filling / applying fast setting joint fillers in concrete joints are limited to using a plural metering electric pump or with a dual cartridge loaded in a dual cartridge gun.

The plural metering pumps are expensive and require a thorough cleaning after each use to work properly.

This increases the time and cost to operate the machine.

This system is known to have problems during use and often malfunction during use, which is costly for the project.

Dual cartridges greatly increases the joint filler cost.

They are very problematic because portions of the two liquids do not properly mix through the static mixing tube.

This leaves gummy / gooey spots in the joint filler.

Additionally, cartridges have a limited shelve life because the liquid ingredients inside the cartridges separate and are difficult to mixed back together.

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